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112 lines
3.7 KiB
C
112 lines
3.7 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2002 Niels Elburg <nwelburg@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License , or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
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*/
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#include <libvje/effects/common.h>
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#include <veejaycore/vjmem.h>
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#include "transline.h"
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vj_effect *transline_init(int width, int height)
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{
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vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
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ve->num_params = 4;
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
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ve->defaults[0] = 150; /* opacity */
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ve->defaults[1] = 10; /* line width */
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ve->defaults[2] = 3; /* distance */
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ve->defaults[3] = 0; /* type */
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ve->limits[0][0] = 0;
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ve->limits[1][0] = 255;
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ve->limits[0][1] = 1;
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ve->limits[1][1] = width;
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ve->limits[0][2] = 2;
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ve->limits[1][2] = width;
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ve->limits[0][3] = 0;
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ve->limits[1][3] = 1;
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ve->sub_format = 1;
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ve->description = "Transition Line";
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ve->extra_frame = 1;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list(ve->num_params, "Opacity", "Line width", "Distance" , "Mode");
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return ve;
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}
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static void transline1_apply(uint8_t *yuv1[4], uint8_t *yuv2[4], int width, int height, int distance, int line_width)
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{
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int x, y, z;
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int step;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x += distance) {
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step = line_width;
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if (distance < step)
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step = distance - 1;
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for (z = 0; z < step; z++) {
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yuv1[0][(y * width + x + z)] = yuv2[0][(y * width + x + z)];
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yuv1[1][(y * width + x + z)] = yuv2[1][(y * width + x + z)];
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yuv1[2][(y * width + x + z)] = yuv2[2][(y * width + x + z)];
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}
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}
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}
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}
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static void transline2_apply(uint8_t *yuv1[4], uint8_t *yuv2[4], int width, int height, int distance, int line_width, int opacity)
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{
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unsigned int op0, op1;
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int x, y, z;
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int step;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x += distance) {
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step = line_width;
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if (distance < step)
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step = distance - 1;
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for (z = 0; z < step; z++) {
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yuv1[0][(y * width + x + z)] =
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(op0 * yuv1[0][(y * width + x + z)] +
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op1 * yuv2[0][(y * width + x + z)]) >> 8;
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yuv1[1][(y * width + x + z)] =
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(op0 * yuv1[1][(y * width + x + z)] +
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op1 * yuv2[1][(y * width + x + z)]) >> 8;
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yuv1[2][(y * width + x + z)] =
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(op0 * yuv1[2][(y * width + x + z)] +
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op1 * yuv2[2][(y * width + x + z)]) >> 8;
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}
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}
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}
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}
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void transline_apply( void *ptr, VJFrame *frame, VJFrame *frame2, int *args ) {
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int distance = args[0];
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int line_width = args[1];
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int opacity = args[2];
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int type = args[3];
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if (type == 1)
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transline1_apply(frame->data, frame2->data, frame->width, frame->height, distance, line_width);
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if (type == 0)
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transline2_apply(frame->data, frame2->data, frame->width, frame->height, distance, line_width, opacity);
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}
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